Article continues below advertisementHayden Panettiere's ex-boyfriend Brian Hickerson is speaking out about the actress' domestic abuse allegations against him featured in her new memoir.In a recent interview with an outlet, Hickerson addressed Panettiere's memoir, This Is Me: A Reckoning, which was released on Tuesday, May 12, and admitted he struggled with seeing their troubled past brought back into the spotlight.Article continues below advertisementSource: MEGABrian Hickerson opened up about the domestic abuse allegations Hayden Panettiere included in her new memoir.